iokit/Kernel/IOPMPowerSource.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
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  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include <IOKit/pwr_mgt/IOPMPowerSource.h>
  30
  31 #define super OSObject
  32
  33 OSDefineMetaClassAndStructors(IOPMPowerSource, OSObject)
  34
  35 // **********************************************************************************
  36 // init
  37 //
  38 // **********************************************************************************
  39 bool IOPMPowerSource::init (unsigned short whichBatteryIndex)
  40 {
  41   if (!super::init ())
  42     return false;
  43
  44   bBatteryIndex = whichBatteryIndex;
  45   nextInList    = 0;
  46
  47   return true;
  48 }
  49
  50 // **********************************************************************************
  51 // capacityPercentRemaining
  52 //
  53 // **********************************************************************************
  54 unsigned long IOPMPowerSource::capacityPercentRemaining (void)
  55 {
  56    unsigned long percentage = 0;
  57
  58    if (bMaxCapacity > 0)
  59      percentage = (bCurCapacity * 100) / bMaxCapacity;
  60
  61    // always return a non-zero value unless the real capacity IS zero.
  62    if (percentage == 0 && bCurCapacity > 0)
  63      percentage = 1;
  64
  65    return percentage;
  66 }
  67
  68 // **********************************************************************************
  69 // atWarnLevel
  70 //
  71 // **********************************************************************************
  72 bool IOPMPowerSource::atWarnLevel (void)
  73 {
  74   return bFlags & kBatteryAtWarn;
  75 }
  76
  77 // **********************************************************************************
  78 // acConnected
  79 //
  80 // **********************************************************************************
  81 bool IOPMPowerSource::acConnected (void)
  82 {
  83   return bFlags & kACInstalled;
  84 }
  85
  86 // **********************************************************************************
  87 // depleted
  88 //
  89 // **********************************************************************************
  90 bool IOPMPowerSource::depleted (void)
  91 {
  92   return bFlags & kBatteryDepleted;
  93 }
  94
  95 // **********************************************************************************
  96 // isInstalled
  97 //
  98 // **********************************************************************************
  99 bool IOPMPowerSource::isInstalled (void)
 100 {
 101   return bFlags & kBatteryInstalled;
 102 }
 103
 104 // **********************************************************************************
 105 // isCharging
 106 //
 107 // **********************************************************************************
 108 bool IOPMPowerSource::isCharging (void)
 109 {
 110   return bFlags & kBatteryCharging;
 111 }
 112
 113 // **********************************************************************************
 114 // timeRemaining
 115 //
 116 // **********************************************************************************
 117 unsigned long IOPMPowerSource::timeRemaining (void)
 118 {
 119   return bTimeRemaining;
 120 }
 121
 122 // **********************************************************************************
 123 // maxCapacity
 124 //
 125 // **********************************************************************************
 126 unsigned long IOPMPowerSource::maxCapacity (void)
 127 {
 128   return bMaxCapacity;
 129 }
 130
 131 // **********************************************************************************
 132 // curCapacity
 133 //
 134 // **********************************************************************************
 135 unsigned long IOPMPowerSource::curCapacity (void)
 136 {
 137   return bCurCapacity;
 138 }
 139
 140 // **********************************************************************************
 141 // currentDrawn
 142 //
 143 // **********************************************************************************
 144 long IOPMPowerSource::currentDrawn (void)
 145 {
 146   return bCurrent;
 147 }
 148
 149 // **********************************************************************************
 150 // voltage
 151 //
 152 // **********************************************************************************
 153
 154 unsigned long IOPMPowerSource::voltage (void)
 155 {
 156   return bVoltage;
 157 }
 158
 159 // **********************************************************************************
 160 // updateStatus
 161 //
 162 // **********************************************************************************
 163
 164 void IOPMPowerSource::updateStatus (void)
 165 {
 166
 167 }
 168
 169
 170
 171
 172